I have seen Pathfinder question about that: Can Bards attack while Performing? But my problem is D&D 3.5 related.
In D&D general text states:
Starting a bardic music effect is a standard action. Some bardic music abilities require concentration, which means the bard must take a standard action each round to maintain the ability.
However, Inspire Courage does not state either way:
Inspire Courage (Su)
A bard with 3 or more ranks in a Perform skill can use song or poetics to inspire courage in his allies (including himself), bolstering them against fear and improving their combat abilities. To be affected, an ally must be able to hear the bard sing. The effect lasts for as long as the ally hears the bard sing and for 5 rounds thereafter. An affected ally receives a +1 morale bonus on saving throws against charm and fear effects and a +1 morale bonus on attack and weapon damage rolls. At 8th level, and every six bard levels thereafter, this bonus increases by 1 (+2 at 8th, +3 at 14th, and +4 at 20th). Inspire courage is a mind-affecting ability.
So can I maintain Inspire Courage and still shoot my bow or throw acid bottles at our enemies? I'm pretty sure I would agree either way, whatever our DM would decide, I just want to know which way it should be by the rules.
Just a note, I use recitations ("poetics", by the RAW), so my character have his hands free, no instrument needed.